nafeesb · March 20, 2024 22:23 · Mar 20, 2024 · Mar 19, 2024 · Mar 17, 2024 · May 2, 2023
diff --git a/python.md b/python.md
@@ -1,3 +1,6 @@
+## Script dir
+`os.path.dirname(os.path.realpath(__file__))`
+
 ## Clear tqdm error
 `tqdm._instances.clear()`
 

diff --git a/python.md b/python.md
@@ -106,9 +106,12 @@ Actions.run.value # index
 
 ## Get IP address
 ```python
-import socket
-s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-s.connect(('www.google.com', 80))
-s.getsockname()[0]
+def get_IP_address():
+    import socket
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    s.connect(('www.apple.com', 80))  # Connect to LDAP. This does not actually need to route.
+    ipaddr = s.getsockname()[0]
+    s.close()
+    return ipaddr
 ```
 
diff --git a/python.md b/python.md
@@ -104,3 +104,11 @@ Actions.run.name # string name
 Actions.run.value # index
 ```
 
+## Get IP address
+```python
+import socket
+s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+s.connect(('www.google.com', 80))
+s.getsockname()[0]
+```
+
diff --git a/python.md b/python.md
@@ -95,12 +95,12 @@ for dll in p.memory_maps():
 ```
 
 ## Dynamic enums
-```
+```python
 actstr = 'stand,walk,run,sit'
 Actions = Enum('Actions', { v:i for i,v in enumerate(actstr.split(',')) })
 Actions.run
 Actions['run']
 Actions.run.name # string name
 Actions.run.value # index
-
+```
 
diff --git a/python.md b/python.md
@@ -94,3 +94,13 @@ for dll in p.memory_maps():
               6 RETURN_VALUE
 ```
 
+## Dynamic enums
+```
+actstr = 'stand,walk,run,sit'
+Actions = Enum('Actions', { v:i for i,v in enumerate(actstr.split(',')) })
+Actions.run
+Actions['run']
+Actions.run.name # string name
+Actions.run.value # index
+
+
diff --git a/python.md b/python.md
@@ -79,3 +79,18 @@ for dll in p.memory_maps():
   print(dll.path)
 ```
 
+## Disassemble expression
+```python
+>>> import dis
+>>> dis.dis("not x is None")
+  1           0 LOAD_NAME                0 (x)
+              2 LOAD_CONST               0 (None)
+              4 COMPARE_OP               9 (is not)
+              6 RETURN_VALUE
+>>> dis.dis("x is not None")
+  1           0 LOAD_NAME                0 (x)
+              2 LOAD_CONST               0 (None)
+              4 COMPARE_OP               9 (is not)
+              6 RETURN_VALUE
+```
+
diff --git a/python.md b/python.md
@@ -38,6 +38,7 @@ result.names = [ l[6] for l in buf ]
 
 ## First item in generator
 `it = next(x for x in loader)`
+`item = next(iter(themap.keys()))`
 
 ## Interrupt tqdm
 ```python

diff --git a/python.md b/python.md
@@ -1,3 +1,6 @@
+## Clear tqdm error
+`tqdm._instances.clear()`
+
 ## Extend namedtuple with methods
 ```python
 ExperimentProps = namedtuple( 'ExperimentProps', config.keys() )

diff --git a/python.md b/python.md
@@ -21,6 +21,8 @@ class Experiment(ExperimentProps):
         with open(self.skeleton, 'r') as f:
             skel = yaml.load(f, Loader=yaml.FullLoader)
         return skel
+
+result = Experiment( *config.values() )
 ```
 
 ## Simple struct

diff --git a/python.md b/python.md
@@ -1,3 +1,36 @@
+## Extend namedtuple with methods
+```python
+ExperimentProps = namedtuple( 'ExperimentProps', config.keys() )
+class Experiment(ExperimentProps):
+    @property
+    def root_path(self):
+        return self._root_path
+
+    @root_path.setter
+    def root_path(self, _val):
+        if os.path.exists(_val):
+            self._root_path = _val
+
+    def network_path(self):
+        return os.path.join( self._root_path, 'network', self.name)
+
+    def get_skeleton(self):
+        '''
+        Load the skeleton, and return dict
+        '''
+        with open(self.skeleton, 'r') as f:
+            skel = yaml.load(f, Loader=yaml.FullLoader)
+        return skel
+```
+
+## Simple struct
+```python
+result = SimpleNamespace()
+result.sizes = [ int(l[3]) for l in buf ] 
+result.types = [ l[5] for l in buf ] 
+result.names = [ l[6] for l in buf ] 
+```
+
 ## First item in generator
 `it = next(x for x in loader)`
 
@@ -40,27 +73,3 @@ for dll in p.memory_maps():
   print(dll.path)
 ```
 
-## extend namedtuple with methods
-```python
-ExperimentProps = namedtuple( 'ExperimentProps', config.keys() )
-class Experiment(ExperimentProps):
-    @property
-    def root_path(self):
-        return self._root_path
-
-    @root_path.setter
-    def root_path(self, _val):
-        if os.path.exists(_val):
-            self._root_path = _val
-
-    def network_path(self):
-        return os.path.join( self._root_path, 'network', self.name)
-
-    def get_skeleton(self):
-        '''
-        Load the skeleton, and return dict
-        '''
-        with open(self.skeleton, 'r') as f:
-            skel = yaml.load(f, Loader=yaml.FullLoader)
-        return skel
-```
diff --git a/python.md b/python.md
@@ -38,4 +38,29 @@ import psutil, os
 p = psutil.Process( os.getpid() )  # current proc
 for dll in p.memory_maps():
   print(dll.path)
+```
+
+## extend namedtuple with methods
+```python
+ExperimentProps = namedtuple( 'ExperimentProps', config.keys() )
+class Experiment(ExperimentProps):
+    @property
+    def root_path(self):
+        return self._root_path
+
+    @root_path.setter
+    def root_path(self, _val):
+        if os.path.exists(_val):
+            self._root_path = _val
+
+    def network_path(self):
+        return os.path.join( self._root_path, 'network', self.name)
+
+    def get_skeleton(self):
+        '''
+        Load the skeleton, and return dict
+        '''
+        with open(self.skeleton, 'r') as f:
+            skel = yaml.load(f, Loader=yaml.FullLoader)
+        return skel
 ```
diff --git a/python.md b/python.md
@@ -1,6 +1,18 @@
 ## First item in generator
 `it = next(x for x in loader)`
 
+## Interrupt tqdm
+```python
+try:
+    with tqdm(...) as t:
+        for i in t:
+            ...
+except KeyboardInterrupt:
+    t.close()
+    raise
+t.close()
+```
+
 ## Merge PDF files
 ```python
 import PyPDF2

diff --git a/python.md b/python.md
@@ -1,3 +1,6 @@
+## First item in generator
+`it = next(x for x in loader)`
+
 ## Merge PDF files
 ```python
 import PyPDF2

diff --git a/python.md b/python.md
@@ -17,6 +17,7 @@ reduce( lambda x,y: x+y, l )
 ```
 
 ## List DLLs loaded by a process
+From: [StackOverflow](https://stackoverflow.com/questions/5553917/how-to-list-all-dlls-loaded-by-a-process-with-python)
 ```python
 import psutil, os
 p = psutil.Process( os.getpid() )  # current proc

diff --git a/python.md b/python.md
@@ -15,3 +15,11 @@ from functools import reduce
 l = [['a', 'b', 'c'], ['d'], ['e', 'f']]
 reduce( lambda x,y: x+y, l )
 ```
+
+## List DLLs loaded by a process
+```python
+import psutil, os
+p = psutil.Process( os.getpid() )  # current proc
+for dll in p.memory_maps():
+  print(dll.path)
+```
diff --git a/python.md b/python.md
@@ -7,4 +7,11 @@ merger = PyPDF2.PdfFileMerger()
 for f in tomerge:
     merger.append(PyPDF2.PdfFileReader( open(f, 'rb') ) )
 merger.write('merged.pdf')
-```
+```
+
+## Flatten 2-level list
+```python
+from functools import reduce
+l = [['a', 'b', 'c'], ['d'], ['e', 'f']]
+reduce( lambda x,y: x+y, l )
+```
diff --git a/python.md b/python.md
@@ -0,0 +1,10 @@
+## Merge PDF files
+```python
+import PyPDF2
+tomerge = [ v for v in os.listdir('.') if 'pdf' in v ]
+
+merger = PyPDF2.PdfFileMerger()
+for f in tomerge:
+    merger.append(PyPDF2.PdfFileReader( open(f, 'rb') ) )
+merger.write('merged.pdf')
+```
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